APA

Research Analysis Group, United States, . (1969). Physics of sound in the sea. Washington: Dept. of the Navy, Headquarters Naval Material Command; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].

Chicago

Research Analysis Group, United States, . 1969. Physics of sound in the sea. Washington: Dept. of the Navy, Headquarters Naval Material Command; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].

Harvard

Research Analysis Group, United States, . (1969). Physics of sound in the sea. Washington: Dept. of the Navy, Headquarters Naval Material Command; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.].

MLA

Research Analysis Group, United States, . Physics of sound in the sea. Washington: Dept. of the Navy, Headquarters Naval Material Command; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]. 1969.